How many tonnes of diesel is consummed by a cargo ship?

check out this site on the worlds largest diesel for a container ship. It says that at the most efficient speed it will still burn 1660 gallons of fuel per hour! Thats a bit more than 2.5 tons/hour.http://www.ultimatestupidity.com/pics/1/...

Depends on many factors. For a small ship like that probably not too much, although more than you would want to pay for. We were burning around 450 kgs per mile on a 98,000 ton steamship going 14 kts. Was on an @80,000 ton diesel container ship going to Thailand where each of the many fuel tanks were five stories tall. Going 28+ kts in the china sea to outrun pirates we burnt way too much. Couldn't make it half way across the Pacific going that speed compared to round trip going slower.